These actually look like a good idea. I've realized that I don't actually need big fins most of the time unless I'm freediving. What I want is easy in, easy out especially shore or small boat scuba diving. I had a pair of forcefins with bungee straps that worked pretty well but the strap broke and I lost the fin. I could walk ok with the force fins. These would probably be even better.

This would probably be excellent for the military/seals. You can swim into shore and run for it!